Podcast
Questions and Answers
What is the function of the Control Unit (CU) in the CPU?
What is the function of the Control Unit (CU) in the CPU?
The Central Processing Unit (CPU) is also referred to as a microprocessor.
The Central Processing Unit (CPU) is also referred to as a microprocessor.
True (A)
Name one example of an input device.
Name one example of an input device.
Keyboard
The ________ is used to handle arithmetic and logical operations in the CPU.
The ________ is used to handle arithmetic and logical operations in the CPU.
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Match the following output devices with their usage:
Match the following output devices with their usage:
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Which device is NOT considered an output device?
Which device is NOT considered an output device?
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Voice input devices are considered outdated technology.
Voice input devices are considered outdated technology.
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What significant advancement in computer technology is represented by modern integrated circuits (ICs)?
What significant advancement in computer technology is represented by modern integrated circuits (ICs)?
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Study Notes
Computer Science - Class XI
- The CPU receives instructions and data from memory.
- It performs arithmetic and logic operations, storing results in memory.
- During processing, data and instructions are temporarily stored in CPU registers.
- Registers are limited in size and number, used for various data types.
- The CPU also has an Arithmetic Logic Unit (ALU) and Control Unit (CU).
- ALU handles arithmetic & logic operations, and the CU manages instruction execution flow.
- CU controls program execution flow and manages data flow.
Input Devices
- Input devices convert data into a digital format usable by a computer system.
- Examples include keyboards, mice, scanners, touchscreens, etc.
- Braille keyboards are designed for visually impaired users.
- Voice recognition, leveraging Google's technology, can be used to input data.
- Input data is temporarily stored in the main memory (RAM).
Output Devices
- Output devices convert digital information into a human-readable format.
- Examples include monitors, printers, 3D printers, headphones, speakers, and projectors.
- Braille displays aid in textual output interpretation for visually impaired users.
- Printers (inkjet, laser, dot matrix) produce physical output.
- 3D printers create physical replicas of digital designs.
Computer Evolution
- Computing devices evolved from simple calculators to powerful data processors.
- Early devices included the Pascaline (mechanical calculator) and tabulating machines (using punched cards).
- The ENIAC and EDVAC computers marked advancements in stored-program architecture.
- Modern computers utilize integrated circuits (ICs) for high-speed processing.
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Description
Test your knowledge on key concepts of Computer Science for Class XI. This quiz covers the functions of the CPU, various input and output devices, and their importance in data processing. Prepare to enhance your understanding of how computers process and interact with data.
